Preliminary Earthquake Report

Magnitude 4.5 OFF THE EAST COAST OF HONSHU, JAPAN
Wednesday, February 01, 2012 at 16:48:56 UTC

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Magnitude 4.5
Date-Time Wednesday, February 01, 2012 at 16:48:56 (UTC) - Coordinated Universal Time
Thursday, February 02, 2012 at 02:48:56 AM local time at epicenter
Time of Earthquake in other Time Zones
Location 37.04N 144.56E
Depth 35 kilometers
Region OFF THE EAST COAST OF HONSHU, JAPAN
Distances 328 km (204 miles) E of Iwaki, Honshu, Japan
351 km (218 miles) ESE of Sendai, Honshu, Japan
372 km (231 miles) E of Fukushima, Honshu, Japan
458 km (284 miles) ENE of TOKYO, Japan
Location Uncertainty Error estimate
Parameters Nst=44, Nph=44, Dmin=564.5 km, Rmss=1.23 sec, Erho=8.9 km, Erzz=0 km, Gp=91.9 degrees
Source USGS NEIC (WDCS-D)
Event ID us2012wlbe

NB: The official magnitude for this earthquake is indicated at the top of this page. This was the best available estimate of the earthquake's size, at the time that this page was created. Other magnitudes associated with web pages linked from here are those determined at various times following the earthquake with different types of seismic data. Although, given the data used, they are legitimate estimates of magnitude they are not considered the official magnitude.

The region name is an automatically generated name from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme. The boundaries of these regions are defined at one-degree intervals and therefore differ from irregular political boundaries. More->

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver